added notes for standalone

README.md

@@ -3,14 +3,10 @@
 ## Useful for:
 * checking new drives for the first time
 * checking used drives for their next live
-* deleting a drive securely
+* deleting a drive securely via overwriting
 
-## planned Features:
-
-* search for new attached Hard Drives via USB
-* display Hard Drive Manufacturer, Model, Rotation Rate and Capacity
-* Check S.M.A.R.T. values and make an 'passed' or 'not passed' decision
-* If passed, wipe the data securely
+## Screenshot 
+![alt text](https://github.com/adam-p/markdown-here/raw/master/src/common/images/icon48.png "Logo Title Text 1")
 
 ## Debian Build Notes
 
@@ -18,5 +14,65 @@
 * clone repo
 * make release
 
+## Create Standalone with Debian
 
+Instructions how to create a standalone machine that boots directly to reHDD. This is aimed for production use, like several drives a day shredding.
+
+### Software requirements
+
+* apt-get install hwinfo
+* wget http://ftp.de.debian.org/debian/pool/main/s/smartmontools/smartmontools_7.1-1_amd64.deb
+* dpkg --install smartmontools_7.1-1_amd64.deb 
+
+### Start reHDD after boot without login (as a tty shell)
+
+nano /etc/systemd/system/reHDD.service
+```
+[Unit]
+Description=Custom user interface on tty1
+Conflicts=getty@tty1.service
+Before=getty.target
+
+[Service]
+WorkingDirectory=/root/reHDD
+ExecStart=/root/reHDD/reHDD
+StandardInput=tty
+StandardOutput=tty
+Restart=always
+RestartSec=1
+UtmpIdentifier=tty1
+TTYPath=/dev/tty1
+TTYReset=yes
+TTYVHangup=yes
+TTYVTDisallocate=yes
+SendSIGHUP=yes
+
+[Install]
+WantedBy=multi-user.target
+```
+
+nano /etc/systemd/system/reHDDSettings.service 
+```
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+ExecStart=/usr/bin/bash /root/reHDDSettings.sh
+
+[Install]
+WantedBy=multi-user.target
+```
+
+nano /root/reHDDSettings.sh
+```
+#!/bin/bash
+dmesg -n 1 #disable overlay if a drive is attached/detached
+rm -f /root/reHDD/reHDD.log
+```
+Make sure the binary reHDD is in /root/reHDD/
+Add your system drive in /root/reHDD/ignoreDrives.conf like:
+``` /dev/sdX:e102f49d-5ed5-462b-94c5-ef66a4345671```
+Get your UUID via blkid /dev/sdX
+
+systemctl enable reHDD.service
+systemctl enable reHDDSettings.service